Overview
The DAC7551IDRNRG4, produced by Texas Instruments, is a single-channel, 12-bit, voltage-output digital-to-analog converter (DAC) known for its exceptional linearity, monotonicity, and ultra-low glitch energy. This device operates from a single 2.7V to 5.5V supply and features a 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP interface standards. The DAC7551 is designed for low power operation, with a typical current consumption of 100µA at 2.7V and a power-down mode that reduces current consumption to under 2µA. It is particularly suited for applications requiring high accuracy and stability, such as waveform generation and industrial voltage control.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | Bits | ||
| Relative Accuracy (INL) | ±0.35 | ±1 | LSB | |
| Differential Nonlinearity | ±0.08 | ±0.5 | LSB | |
| Offset Error | ±12 | mV | ||
| Gain Error | ±0.15 | %FSR | ||
| Full-Scale Error | ±0.5 | %FSR | ||
| Settling Time | 5 | µs | ||
| Power Supply | 2.7 | 5.5 | V | |
| Normal Operation Current | 100 | 200 | µA | |
| Power-Down Current | 0.05 | 2 | µA | |
| Temperature Range | -40 | +105 | °C |
Key Features
- Ultra-low glitch energy: 0.1nV-s
- 12-bit resolution with monotonicity and linearity
- Rail-to-rail voltage output
- Low power operation: 100µA at 2.7V
- Power-on reset to zero scale
- Power-down feature: 0.05µA at 2.7V
- SPI-compatible serial interface with Schmitt-trigger input up to 50MHz
- Daisy-chain capability
- Asynchronous hardware clear to zero scale
- Settling time: 5µs (max)
Applications
The DAC7551 is well-suited for various applications that require high accuracy and stability, including:
- Waveform generation from DC to 10kHz
- Industrial voltage control, such as generating ±5V, ±10V, and ±12V outputs
- High-speed control loops due to its fast settling time and low glitch energy
- Digitally-controlled current sources
- Automotive and industrial control systems where precise analog output is necessary
Q & A
- What is the resolution of the DAC7551?
The DAC7551 has a 12-bit resolution.
- What is the typical relative accuracy of the DAC7551?
The typical relative accuracy is ±0.35LSB.
- What is the power supply range for the DAC7551?
The DAC7551 operates from a single 2.7V to 5.5V supply.
- What is the typical current consumption of the DAC7551 during normal operation?
The typical current consumption is 100µA at 2.7V.
- What is the power-down current of the DAC7551?
The power-down current is 0.05µA at 2.7V.
- What is the settling time of the DAC7551?
The settling time is 5µs (max).
- Is the DAC7551 compatible with SPI interface?
Yes, the DAC7551 is compatible with SPI, QSPI, Microwire, and DSP interface standards.
- Can the DAC7551 be used in daisy-chain configurations?
Yes, the DAC7551 supports daisy-chain operation.
- What is the glitch energy of the DAC7551?
The glitch energy is 0.1nV-s.
- What is the temperature range for the DAC7551?
The specified temperature range is -40°C to +105°C.
